On a serious note, having looked through the Mustang ads of the time, I have to say that Ford cleverly marketed it towards men and women, male drivers and female drivers, on the Mustang's customisability meaning that two Mustangs could be kitted out very differently. Obviously the model went in one particular direction over time but it's quite a nice wrinkle in the fabric of automotive history to see Ford's brand-new sports luxury car find its place in the market.
That's the thing, it was always supposed to be, first and foremost, a fun, affordable, decent looking, mid-sized sporty-ish car who's number one function is being, well, a car, a useful, reasonably practical but still fun car. Used that "fun" word twice for a reason. One you could option up if you wanted to, or not, you could make it into a race car of some sort but that wasn't supposed to be it's primary point. A sports car for everyone, is what Iacocca had originally envisioned. And it was.
I like most of them in one way or another, the 69/70 are probably my favourites but there's an internal argument to be made for many different versions. I've sure owned enough of them and had even more in my orbit with friends and family, dozens of them, all the way back to my Dad's '67 Fastback. They sort of started losing the plot with the S550 as it was starting to lose it's practicality and become just a bit too hard and extreme, and although I've not driven a 650 yet, they sure don't seem to be being bought or used as dailies anymore and they've no longer anything even close to mid-sized. Or really affordable. So I voted for the S197, because I feel that it was the last one that still had that original recipe before they started to go a little too far down the road racer path. And partly because one has been my daily for nearly 20 years and 470,000kms. And I still smile every time I drive it. And on a bad day, I just have to remember, as I'm rolling down the road in my old Mustang listening to the Rolling Stones on the radio with the windows down, half the planet wishes they could be there, the other half of course wishes it was The Beatles on the radio.